POLYURETHANE CATALYST

Appearance/Odor

[APPEARANCE AND ODO] ]] Pale yellow liquid with mild odor ========= SECTION IV - FIRE AND EXPLOSION HAZARD DATA FLASH POINT (Deg F): 104 METHOD USED: TOC FLAMMABLE LIMITS IN AIR BY % VOLUME- LOWER: .9 UPPER: 10.5 EXTINGUISHING MEDIA: FOAM, CO2, DRY CHEMICAL SPECIAL FIREFIGHTING PROCEDURES Full emergency equipment with self-contained breathing apparatus and full protective clothing should be worn by fire fighters. During fire, HDI vapors and other irritating , highly toxic gases may be generated by thermal decomposition. UNUSUAL FIRE AND EXPLOSION HAZARDS Isolate from heat, electrical equipment, sparks and open flame. Closed container may explode when exposed to extreme heat or burst when contaminated with water. Solvent vapors may be heavier than air. Stagnant air may cause vapors to accumulate and travel along the ground to an ignition source which may result in a flash back to the source of the vapor. ============== SECTION V - REACTIVITY DATA ====== STABILITY: STABLE CONDITIONS TO AVOID Page: 2 Excessive heat, sparks or open flames. INCOMPATIBILITY TO AVOID) Water, amines, strong bases, alcohols, metal compounds and surface active HAZARDOUS DECOMPOSITION OR BYPRODUCTS Carbon dioxide, carbon monoxide, oxides of nitrogen, traces of HCN and HDI HAZARDOUS POLYMERIZATION: MAY OCCUR WILL NOT OCCUR May occur if in contact with moisture or other materials which react with isocyanates. May occur at temperatures over 400 Deg SECTION VI

Acute Health Hazards

INHALATION HEALTH RISKS AND SYMPTOMS OF EXPOSURE May cause irritation of the mucous membranes in the respiratory tract (nose, throat, lungs) causing runny nose, sore throat, coughing, chest discomfort, shortness of breath and reduced lung function (breathing obstruction). SKIN AND EYE CONTACT HEALTH RISKS AND SYMPTOMS OF EXPOSURE Skin contact may cause irritation. Symptoms of skin irritation may be reddening, swelling, scaling or blistering. Eye contact may cause tearing, reddening and swelling of the eyes. SKIN ABSORPTION HEALTH RISKS AND SYMPTOMS OF EXPOSURE Skin absorption may cause systemic effects similar to those identified under inhalation effects. INGESTION HEALTH RISKS AND SYMPTOMS OF EXPOSURE Ingestion may result in irritation and possible corrosive action in the mouth, stomach and digestive tract.

Health hazards

(ACUTE AND CHRONIC) Acute: May cause irritation of the mucous membranes, eyes, skin and throat. Other symptoms are headache, nausea, fatigue and loss of appetite. Ingestion may cause vomiting which may result in aspiration of the solvent resulting in chemical pneumonitis. Chronic: May cause lung damage, skin sensitization and neurotoxic effects including permanent brain and nervous system damage. CARCINOGENICITY: NTP CARCINOGEN: No IARC MONOGRAPHS: No

Medical Conditions Generally Aggravated by Exposure

Asthma and any other respiratory disorders (bronchitis, emphysema, hyperreactivity), skin allergies and eczema.